2 years ago

I need help with geometry

1 answer:

6 0

Answer: The answer is C. because all biconditional statements are written w/ if and only if in statements. Hope this helps :)

Step-by-step explanation:

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Perpendicular lines intersect to form right angles. What is true about the statement? Check all that apply. The hypothesis is “i

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1. The Hypothesis is "If lines are perpendicular" 2. This Is a Compound Statement 3. This is a Conditional Statement

Step-by-step explanation:

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2 years ago

The graph of f(t) = 3.2 shows the value of a rare coin in year t. What is the

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Answer:

B. Every year the coin is worth 3 more dollars.

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What is the opposite of 48? <br> A. –84 B. –48 C. 48 D. 84

Aleksandr [31]

It's B Dat is dat is right

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2 years ago

If sin(x) = 5/13, and x is in quadrant 1, then tan(x/2) equals what?

Rufina [12.5K]

$x$ is in quadrant I, so $0$ , which means $0$ , so $\dfrac x2$ belongs to the same quadrant.

Now,

$\tan^2\dfrac x2=\dfrac{\sin^2\frac x2}{\cos^2\frac x2}=\dfrac{\frac{1-\cos x}2}{\frac{1+\cos x}2}=\dfrac{1-\cos x}{1+\cos x}$

Since $\sin x=\dfrac5{13}$ , it follows that

$\cos^2x=1-\sin^2x\implies \cos x=\pm\sqrt{1-\left(\dfrac5{13}\right)^2}=\pm\dfrac{12}{13}$

Since $x$ belongs to the first quadrant, you take the positive root ( $\cos x>0$ for $x$ in quadrant I). Then

$\tan\dfrac x2=\pm\sqrt{\dfrac{1-\frac{12}{13}}{1+\frac{12}{13}}}$

$\tan x$ is also positive for $x$ in quadrant I, so you take the positive root again. You're left with

$\tan\dfrac x2=\dfrac15$

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2 years ago

I need help,please.this is an interior angle problem.

natali 33 [55]

Answer:yes

Step-by-step explanation:

<BAC=<BDE

<BCA=BED

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2 years ago